Weft-replenishing double-fabric loom



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WEFT REPLENISHING DOUBLE FABRIC LOOM Filed Nov. 10, 1927 7 Sheets-Sheet l May 7, 1929.

A. P. PAINE ET AL WEFT REPLENISHING DOUBLE FABRIC LOOM 7 Sheets-Sheet 2 Filed Nov. 10 1927 y 1929- A. P. PAINE ET AL WEFT REPLENISHING DOUBLE FABRIC LOOM Filed Nov. 10, 192? '7 Sheets-Sheet 3 VII/Ill",

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WEFT REPLENISHING DOUBLE FABRIC LOOM Filed Nov. 10 1927 '7 Sheets-Sheet 4 ,l M T 20 W W May 7, 1929.

A. P. PAINE AL 1,711,613

WEFT REPLENISHING DOUBLE FABRIC LOOM Filed Nov. 10 1927 7 Sheets-Sheet 5 y 1929- A. P. PAINE Er m.

WEFT REPLENISHING DOUBLE FABRIC LOOM Filed Nov. 10, 1927 7 Sheets-Sheet 6 May 7, 1929.

A. P. PAINE ET L 1,711,613 WEFT REPLENISHING DOUBLE FABR IC LOOM Filed Nov. 10, 1927 7 Sheets-Sheet 7 Patented May 7, 1929.

' UNITED STATES PATENT- OFFICE.

ARTHUR P. PAINE, OF WORCESTER, AND HAROLD L. IBLANCHARD, OF MILLBURY, MASSACHUSETTS, ASSIGNORS TO CROMPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A COR-POEATION OF MASSACHUSETTS.

WEFT-REPLENISHING DOUBLE-FABRIC LOOM.

Application filed November 10, 1927. Serial No. 232,421.

This invention relates to a loom in which a double fabric may be woven by the use of two shuttles, one of which travels in the lower shed and the other in the upper shed. Such looms are commonly used in the simultaneous production of two pile fabrics, such as plush, velvets or certain kinds of carpet. A loom of this general type is shown in the prior patent to Shuttleworth, No.354,358, issued December 14,1886.

.It is the general object of our present invention to provide weft replenishing mechanism for such a loom, by which the weft in either the upper or the lower shuttle may be automatically replenished upon indication of weft exhaustion therein.

A further object is to provide mechanism for indicating such weft exl'iaustion in either shuttle and for controlling the operation of the weft replenishing mechanism. \Ve have also provided improvements in the picking mechanism particularly applicable to the purposes this invention.

()ur invention further relates to arrangements and combinations of parts which will be hereinafter described and more part1cu-' larly pointed out in the appended claims.

A. preferred form of the invention is'shown in the drawin s, in which weft replenishing mechanism and portions of the loom to which it is applied;

Fig. 2 is a plan View of the mechanism shown in Fig. 1;

Fig. 3 is a detail end elevation, looking in the direction of the arrow 3 in Fig. 1;

Figs. 4 and 5 are sectional end elevations, taken along the lines 4-4 and 5-5 in Fig. 2, respectively Fig: 6 is a partial plan view, taken along the line 66 in Fig. 4;

Fig. 7 is a detail sectional end elevation of' certain parts, taken along the line 7-7 in Fig. 6; V

Fig. 8 is an end elevation of parts of the loom, showing the picking mechanism;

Fig. 9 is a front elevation of the picking mechanism shown in Fig. 8;

Fig. 9 is a diagrammatic view, illustrating the type of fabric to be Woven in our improved loom; I

F ig., 10 is a partial plan view, showing weft Fig. 1 is a front elevation of our improved detecting mechanism adapted for use in our nism for transmitting an indication to the weft replenishing mechanism;

Fig. 14 is a sectional end elevation, taken along the line 1414 in Fig. 13; i

Fig. 15 is a partial plan view indicating the relative positions of the shuttles when boxed; Fig. 16 is a sectional end elevation, taken along the line 16 -16 in Fig. 15, and

Fig.1? is a view similar to Fig. 16, but showing the parts in a different position.

'lteferring to Figs. 8 and 9, we have indicateda portion of a loom frame 20 having a lay 21 mounted upon a rock shaft 22 and connected by arms 23 to acrankshaft 24: by which it is swung forward and rearward in the usual manner. I I

The shuttle S (Fig. 9) travels back and ,forth'in the lower shed of a double pile fabric,

between the lower warp threads W and the middle warp threads W, while a second shuttle S travels in the opening between the mid dle warp threads W and the upper warp threads W The lay 21 is provided with superposed shuttle boxes 26 and 27 (Fig. 9). The shuttle box 26 underlies and supports the box 27 and extends to the right thereof as indicated in Fig. 9 and the top and bottom of each .shuttle box are open, so that a bobbin may be freely inserted in either shuttle or ejected therefrom by direct downwardinov'ement.

Separate pickers 28 and 29 (Fig. 8)- are provided for theshuttles S and S respectively, said pickers being mounted to slide on the usual spindle rods and being actuated by separatepicker sticks 30 and 31. The sticks 30 and 31 are separately pivoted onthe rock,

shaft 22 of the lay and are provided with offset portions through which they are actuated by pick levers 32 and 33. These levers have ick cam plates 34 positioned for engagement iiy rolls 35 and 36 on crank arms 37 and 38 secured to a bottom orcam shaft 39. The shaft 39 is commonly arranged to rotate once for cured to the breast beam 54 of the loom. corresponding transferrer 60 is provided for every two revolutions of the crankshaft 24. The cam roll has an adjustable bolt and slot connection with its crank arm 37, so,that the timing of the pick for the shuttle S may be varied relatively to the timing of the pick for the shuttle S.

It is desirable that the upper shuttle be substantially superposed upon the lower shuttle when in flight, in order that it may be supported thereby during its travel across the lay. Consequently it is necessary that the two pick motions should be so timed that the shuttle S will begin its [light slightly before the shuttle S in order that its may advance to a position under the shuttle S as the latter shuttle begins its flight. In order tosecure this exact timing, the adjustable bolt and slot connection of the roll 35 to the arm 7 is provided.

Weft replenishing mechanism.

Referring now to Figs. 1. and 2, we have rovided a simple magazine M to replenish the shuttle S and a similar magazine. M for the shuttle S. Each of these magazines comprises a head plate 40 and a supporting plate 41, secured in spaced relation by tie rods 42. The head plate 40 is provided with a groove or channel 44 (Fig. 6) to receive the butts of the bobbins and the supporting plate 41 is provided with a similar groove or channel to receive the tips of the bobbins.

These grooved channels are preferably substantially vertical in their upper portions and segmentally curved rearwardly in their lower portions, as indicated in Fig. 5, so that a bobbin may be delivered thereby to a position for direct downward transfer to the shuttles S or A transferrer (Fig. 2) is. provided for the magazine M, said transferrer being pivoted on a stud 52 mounted in a bracket 53 sethe magazine M mounted on a stud 62 on a bracket 63 also secured to the breast beam 54.

Coil springs 55 and 65 normally hold the transferrers in raised position and each transferrer' is provided with a latch 56 or 66,

mounted on a depending arm 57 or 67 connected with the corresponding transferrer. The latches 56 and 66 are positioned for engagement with lugs or daggers 58 and 68 on the lay 21, each latch being 1noved into the path ofits lug or dagger upon indication of transfer.

Suitable give-way springs 7 0 (Fig. 7) are provided for yieldingly retaining the lowermost bobbin m each magazine 1n position for transfer until engaged and forced downward and 77. The shafts 76 and 77 extend along the front of the loom to the opposite side of the loom where the weft detecting mechanism Superposed weft del orillustrative purposes, we have shown a slide transversely in the rear support 86 and is provided with a notch 88 closely engaging the middle portion of the detecting member 82. A spring 89 surrounds the member 82 and is interposed between the swivel block 83 and the cross-piece 90 on the member 82, thereby forcing the detecting member rearwardly until the cross piece '90 engages the rear support 86 and aligns itself therewith.

If the weft engaging member 82 encounters abobbin having sufficient weft thereon, the end of the member 82 engages the weft and is carried directly forward thereby, causing little side-wise motion of the notched block 87. If, however, the weft is substantially exhausted, the member 82 slides along the surface of the bobbin, thereby causing sliding moven'icnt of the block 87. The blocks 87 are connected by links 92 to indicating plungers 93; The plungers 93 are slidably mounted in supportsc94 and 95 (Fig. 13) which are pivoted respectively on arms 96 and 97 which are fixed to the indicating rock shafts 76 and 7 7 previously described. An actuator 100 is mounted to slide adjacent the endsof the indlcating plungers 93 and is provided with shoulders 101 and 102 for engagement with said plungers. The actuator 100 is regularly moved forward and rearward by a cam 103 (Fig. 14) acting through an actuating lever 104, a. link 105 and a bell crank 106.

Weft guiding device.

- Reference to Figs. 15 and 16 will indicate that a clear path must be provided underneath the shuttle S, so that an exhausted weft carrier B may be ejected downwardly without engaging or breaking the weft F extending to the bobbin B in the shuttle S. As the weft F for the shuttle S would naturally extend directly underneath the shuttle S, as

indicated in Fig. 15, we have provided a Weft positioning member 110 having a lug or shoulder 111 at its rear end adapted to engage the filling F from the shuttle S as the lay (Figs. 1, 2 and 3) each adjustable vertically and angularly in a block 113 which in turn may be adjusted angularly or axially on one of the spacing rods 42 of ,the magazine.

Operation.

Having described the details of con-struction of our improved loom, the operation thereof will be readily apparent. The shuttles S and S are picked simultaneously in the same direction across the lay and the shuttle S is picked slightly earlier from the magazine side than the shuttle S, so that it may advance and take a position under the shuttle S as the latter is picked, and so that it may provide a support for the upper shuttle throughout its flight.

The shuttles upon arriving at the opposite side of the loom are received in the boxes and are engaged by the detecting members 82 of the upper and lower detecting mechanisms. If the weft in either shuttle substantially exhausted, the corresponding member 82 slips sidewise, projecting the corresponding plunger 93 into the path of a shoulder of the actuator 100, whereupon the plunger and its associated support 94 or 95 is pushed forward, rocking the corresponding shaft 76 or 77, and positioning the corresponding latch 66 or 56 in the path of-the dagger 68 or 58. The associated transferrer is thereby depressed, transferring fresh bobbin to the exhausted shuttle.

It will be seen that the weft supply in either shuttle may thus be replenished upon any alternate pick and that the replenishment of each-shuttle is entirely'independent of the replenishment of the other shuttle. Furthermore, it will be seen that thereplenishment takes place immediately upon the return of a shuttle to the magazine side and one pick only after the indication of weft exhaustion.

By the provision of very simple mechanism, we are thus able to automatically replenish the weft supply in either shuttle of a double fabric loo'm, a result of great importance in the development of the textile ar Having thus described our invention and the advantages thereof, we do not wish to be limited to the details herein disclosed otherwise than as set forth in the claims, but what wev claim is 1. In a weft replenishing loom, a lay having a pair of superposed shuttle boxes at one end thereof, one of said boxes being at a greater distance from the adjacent cloth selvage than the other box, shuttles for said boxes, and means to transfer a fresh weft carrier to a shuttle in either box by direct downward movement of the weft carrier.

2. In a weft replenishing loom, a lay having a pair of superposed shuttle boxes at one end thereof, one of said boxes being at a greater distance from the adjacent cloth selvage than the other box, shuttles for said boxes, means to presentboth shuttles substantially simultaneously in both boxes at the replenishing side of the loom, and means to transfer a fresh weft carrier to a shuttle in either box by direct downward movement of the weft carrier.

3. In a weft replenishing loom, a lay having pair of superposed shuttle-boxes at one end thereof, one of said boxes being at a greater distance from the adjacent cloth selvage than the other box, shuttles in said boxes. said boxes being located to position the shuttles therein out of vertical alignment with each other, and means to transfer a fresh weft carrier to either-shuttle by direct downward movement of the weft carrier.

4:. In a fresh weft replenishing loom, a plurality of weft carrier magazines mounted on one side of the m and atditferent dis tances from the adjacent selvage of the cloth, a lay having a plurality of shuttle boxes at the weft replenishing end thereof, shuttles for said boxes, and means to transfer a fresh weft carrier from eithermagazine to a shuttle on said lay. v

5. In a loom, a lay having a pair of shut tle boxes fixed at different elevations at each end of the lay, said boxes being also substantially out of vertical alignment at the replenishing end of the lay, a separate shuttle for each two boxes, and meansto replenish the weft in either shuttle by a substantially vertical transfer of a fresh weft carrier thereto.

6. In a weft replenishing loom, means to provide upper and lower warp sheds, a pair of shuttles operative simultaneously in said upper and lower sheds, means' to give one of said shuttles a flight of predeterminedlength in one shed, means to give the other shuttle a flight of greater length in the other shed, and means to insert a fresh weft carrier- ,in either shuttle by direct downward move-' 'ment, said replenishment in one shuttle taking place at a substantially greater distance from the adjacent cloth selvage than the replen ishment in the other shuttle.

7. In a weft replenishing loom, means to provide upper and lower Warp sheds, a pair of shuttles operative simultaneously in said upper and lower she'ds, means to give one of said shuttles a flight of predetermined length in one shed, means to give the other shuttle a flight of greater length in the other shed, means to vvary the relative timing of said flights and means to insert a fresh weft carrier in either shuttle by direct downward movement, the shuttles being substantially out of alignment both vertically and horizontally when in transfer position.

8. In a weft replenishing loom, means to provide upper and lower warp sheds, a pair of shuttles operative simultaneously in said upper and lower sheds, vertically aligned shuttle boxes therefor at one side of the loom,

for each shuttle at the first mentioned side of the loom, and separate means to insert a fresh weft carriers in an indicated shuttle at the opposite side of the loom by direct downward movement of said weft carrier.

10. In a weft replenishing loom, means to provide upper and lower warp sheds, a pair of shuttles operative simultaneously in said upper and lower sheds, means to insert a fresh weft carrier in either of said shuttles, and means to move the weft thread of said lower shuttle out of the path of a weft carrier ejected from said upper shuttle.

11. In a weft replenishing loom, means to provide upper and lower warp sheds, a pair of shuttles operative simultaneously in said upper and lower sheds, means to insert a fresh weft carrier in either of said shuttles, and means to move the weft threads of said lower shuttle rearwardly out of the path of a weft carrier ejected from said upper shuttle.

12. Ina weft replenishing loom, means to provide upper and lower warp sheds, a pair of shuttles operative simultaneously in said upper and lower sheds, means to give one of said shuttles, a flight of predetermined length in one shed, means to give the other shuttle a flight of greater length in the other shed, the boxes at'one side of the loom being out of vertical alignment, means to transfer a weft carrier to a shuttle in either of said boxes by direct downward movement, and picking mechanism adjustable to cause said shuttles to cross the lay in direct superposed relation.

13. In a weft replenishing loom, means to alignment, and separate weft carrier magazines for said latter boxes, disposed-at correspondingly different elevations and at different distances from the adjacent cloth selvages.

14. v In a weft replenishing loom, means to i provide upper and lower warp sheds, a pair of shuttles operative in said upper and lower sheds, superposed boxes for said shuttles spaced apart to define flights of different lengths, separate means to indicate weft exhaustion in each shuttle at one side of the loom, and separate meansto insert afresh weftcarrier in an indicated shuttle at the opposite side of the loom, said latter means operatil'ig at substantially different distances from the adjacent cloth selvages.

15. In a weft replenishing loom, n'ieans to provide upper and lower warp sheds, a pair of shuttles operative in said upper and lower sheds, superposed boxes for said shuttles spaced apart to define flights of different lengths, separate means to indicate weft exhaustion in each shuttle at one side of the loom, and separate means to insert a fresh weft carrier in an indicated-shuttle at the opposite side of the loom on the next forward beat of the lay, said latter means operating at substantially different distances from the adjacent cloth selvages.

16. In a loom, a lay, a pair of shuttles, a shuttle box at one end of said lay, substantially twice the length of the associated shuttle, a second and shorter shuttle box superposed on said first box and positioned over the portion of said first box near the adjacent selvage of the cloth, said box being both open from topto bottom to permit insertion and ejecting of a weft carrier, and means to insert a fresh weft carrier in either shuttle.

17. In a weft replenishing loom, a lay having a plurality of superposed shuttle boxes at one end thereof, said boxes being substantial- 1y out of vertical alignment, shuttles for said boxes and means to replenish the weft in any one of said boxes by direct downward movement of the new weft supply.

In testimony whereof we have hereunto affixed our signatures.

ARTHUR P. PAINE. HAROLD BLANOHARD. 

